2720745 has 24 divisors (see below), whose sum is σ = 4769856. Its totient is φ = 1434528.

The previous prime is 2720737. The next prime is 2720747. The reversal of 2720745 is 5470272.

2720745 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2720745 - 2³ = 2720737 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2720747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4342 + ... + 4928.

It is an arithmetic number, because the mean of its divisors is an integer number (198744).

2^2720745 is an apocalyptic number.

It is an amenable number.

2720745 is a deficient number, since it is larger than the sum of its proper divisors (2049111).

2720745 is a wasteful number, since it uses less digits than its factorization.

2720745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701 (or 698 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 27.

The square root of 2720745 is about 1649.4680960843. The cubic root of 2720745 is about 139.6033842635.

The spelling of 2720745 in words is "two million, seven hundred twenty thousand, seven hundred forty-five".